The Mexican National Electoral Institute (INE) initiated work on the Preliminary Election Results Program (PREP) for the 2027 election day. ^[1] The General Council approved a proposal by council member Frida Gómez that district councils will initially evaluate ballots if they find anomalies, leading to an official report. ^[2] The General Council of the INE approved the designation of the Technical Unit of Informatics Services (UTSI) as the coordinating instance for the PREP. ^[3] The UTSI will coordinate technical, operational, and logistical activities for the PREP, including IT systems, infrastructure, security mechanisms, and the publication of preliminary results. ^[4] A proposal to automatically invalidate ballots found without fold marks was rejected by a majority of seven INE counselors. ^[5] Martín Faz Mora, a counselor at the Instituto Nacional Electoral (INE), warned that the discovery of ballots without fold marks is a serious matter. ^[6] The phenomenon of ballots without fold marks was recorded in 20 polling stations in Chiapas during the 2024 federal election. ^[7] The phenomenon was recorded in nearly 400 polling stations during the judicial election in June 2025, in Chiapas, Michoacán, and Tlaxcala. ^[8]